>> DEC keyboard and mice (including tablet) accept reset and model
>> inquiring command sequences.  You need to emulate them to go.
>
> "Need to"?  The machine is willing to power up and boot (with serial
> console for ROM interaction) with the keyboard and mouse disconnected;
> I'd expect the same behaviour with "foreign" keyboard/mouse.

You're right about it.  DEC3000 SRM checks to see the existence of
LK/VS by sending inquiry.  If no good reply is received, it complains
and starts SRM serial console session.   If you manually instruct to
boot via serial console, then NetBSD kernel will go and your KBD
gets available some later.

Toru Nishimura/ALKYL Technology